Both Frost and Unholy Specs are viable to play, also above 2,2k Arena.
It depends on the Setup of your Team. If you play a Tripple DPS Comp or comps with Burst dmg you will most likely go Regular Frost. If you have a non-breakable CC combo like TSG or others you can go Master Frost for insane AOE pressure. If you play with any Casters you will most likely play Unholy. In my opinion, Frost is nice to play but a well played Unholy DK is more viable.

2. Stats

Okay now lets start with our Character.

Note that the stats, gems and enchants stay the same, doesn't matter if you have Vicious, Ruthless or Cataclysmic PvP Gear.

First of all we are going to take a closer look at the Death Knight Stats and Stat Prioritys.
In General you will need 5% Hit wich is about 600.63 Hit Raiting and 195 Spell Penetration (Spell Penetration stops important abilities like Death Grip and Chains of Ice from getting resisted). The rest of our Stats depends on the following:

Like explained above, the Stat Priority depends on your Spec.
If you play Unholy you will have to reforge all Mastery, Crit and Expertise into Haste.
If you play Master Frost you will have to reforge all Haste, Crit and Expertise into Mastery.
If you play Regular Frost you will have to reforge all Mastery, Crit and Expertise into Haste.

If you cannot afford the 2 epic Stormy Gems you will have to take 3 Stormy Ocean Sapphires into the Gloves, Waist and Legs. If you have the option to take Stormy Deepholm Lolits you will place them into the Gloves and the Legs because you want the 10 Strength Socket Bonus of the Waist. If you lack Resilience you can place it into the Legs to get the 20 Resilience Socket Bonus.

6. Talent Trees

You can adjust them for your own Playstyle for example instead of Bladed Amor you could use Blade Barrier and so on but this are the Specs i am currently using:

This Macro will use Death Pact on your Gargoyle if he is activated, on your Ghoul if your Gargoyle is not up. If Both are up it will Sacrifice the Gargoyle or with Shift + Use the Ghoul (if you have Summon Ghoul ready it's better to Sacrifice your Ghoul then)

Dark Simulacrum:
Push the opponent to blow a big CD - for example: I like to grip a Mage and use Dark Simulacrum because every Mage knows when a DK death grips, it's safe to blink. This actually makes them blink, gives you a blink, and you're right on top of them again.

Taunt:
Using Taunt on Healers to keep them Infight and prevent them from Drinking and also to Prevent Damage on the Main Target of the Opponents team by taunting water elementals, gargoyles and other Pets. It is also worth to mention if for example a Mage casts Polymorph on you and you taunt another Pet (Death Knight Ghoul, ...) right before it to hit you out of the sheep.

Dark Transformation:
The Transformed Ghoul will interrupt the Target and immobilize it for 2 Seconds when Leaping / Charging to it. This is also pretty nice to set up a awesome CC Chain: Dark Transformation Charge - Gnaw - Strangulate

Death Grip:
Use this on warriors while Bladestorm is up, it's the only thing you can really do to relieve pressure during these abilities. Its important that you dont waste a Death Grip on small distances.

Hungering Cold:
Match Hungering Cold with Aura Mastery (or you have a sexy tauren like me to warstomp) - Aura Mastery works for you aswell since its a Raid Cooldown. For example: Death Grip - Chains of Ice - Aura Mastery - Hungering Cold

Lichborne:
Lichborne is more then just a fear-breaker. You can prevent Seduce, Sap, Polymoph, Hex, Fears and also Mind Control. If you are in Seduce, Fear or Mindcontrol you can also use it to break it. But be carefull! always make sure that you cancel the Lichborne by making a "/cancelaura Lichborne" macro to prevent shackle of priests and turn evil from paladins.

Thx for reading my Guide,
I hope you enjoyed it and also learnd one or two things.

It's a much better 2s spec for sure than 3s, since some specs rely more on additional snares that desecration easily fits the niche. However, chillblains is enough for 2s and 5s. It opens a lot more kill opportunities and assists in the generation of runic power, a problem that often cripples DW frost (the most effective version of "masterfrost" due to its inherent quality of having a crapload of mastery).

Once again, like you've said, some points can be moved in order to facilitate one's composition or playstyle. Especially Butchery and Improved Frost Presence. I've experimented with rime, and I think if you go into an obliterate heavy build, it's actually worthwhile since it tremendously aids with sticking onto targets. However, obliterate is a rather awkward move. I've seen it crit either absurdly high (31k on a 4500 resil retribution paladin), or absurdly low (almost everything else in every other situation with all procs/cds up).

I enjoyed the guide though, good work! The only other suggestion I could make, is a comparison between "regular" frost, which was the norm before 4.1, and "masterfrost", which I thought was the strongest comp in today's arena. That's one of the reasons I still enjoy frost, since there's a myriad of ways to design the spec depending on your needs, instead of 1 solid cookie cutter spec.

One last tip I would love to mention, is that death grip is a phenomenal tool to use against resto shaman teams. With the right positioning, you can basically keep intense AoE pressure (careful with breaking CCs) while at range. When you feel a shaman is going to spirit link totem, you can grip him and root his teammates, isolating spirit link and thereby either prolonging the shaman's dire situation, or even outright forcing the cooldown in vain if you are lucky enough to death grip when the resto shaman attempts to spirit link totem.

For emphasis, great work!

Nasty, brutish, and about 6'1".

Nameswapro, on 18 November 2014 - 09:38 PM, said:

Look at me. I can start and stop wars, at will. I can save or destroy the world. I can do anything I fucking want. Just now, I pissed near my toilet bowl because I fucking can.

I find the resilience you get from doing this having very little to no effect on my survivability so I'd rather gem red epic gems everywhere (outside of spell pen blue ones) and use peerless stats on my chest for maximum damage. I guess it's a matter of preference Nice job otherwise

nice i just started on my dk and i have such a trouble since i only played blood when lvling and just basicly tanked/got boosted =) so macros are really appriciated, are u using any other macros like offensive ones with trinket/gargoyle or something?

Why does every frost DK go into desecration instead of Hand of Doom/Blade Barrier/Possibly Scent of Blood?

Seriously, it makes Frost DKs 50% more viable. Basically you run around peeling and death striking in blood presence (unless you're not getting trained AT ALL) until 1 minute CDs are up. The additional 6% damage reduction and the ability to line up MORE CC which synergize well with your most powerful burst cooldown (pillar of frost) is the only way I see frost being viable outside of triple dps.

What do you get when you go into desecration? NOTHING YOU DON'T ALREADY HAVE. You get useless disease damage and a weird AoE slow. We don't have issues in regards to AoE slowing.

When you go into the blood tree, you make progress into solving the main issues frost DKs have; survivability, CC, and utility. Runic power generation in the case of DW frost.

It's pretty awful knowing that your only reliable CC can be trinketed everytime it's up. Unless you run with an hpal or a partner that is constantly trained while playing against bad teams, you'll probably never land a hungering cold without extreme difficulty. Almost not worth the effort.

Nasty, brutish, and about 6'1".

Nameswapro, on 18 November 2014 - 09:38 PM, said:

Look at me. I can start and stop wars, at will. I can save or destroy the world. I can do anything I fucking want. Just now, I pissed near my toilet bowl because I fucking can.